package demo3;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: liangyuanzhang
 * Date: 2025-2-28
 * Time: 8:00
 */
public class Computer {
    public void open() {
        System.out.println("开机");
    }

    public void close() {
        System.out.println("关机");
    }

    public void useUsbDevice(USB usb) {
        usb.openDevice();
        if(usb instanceof Mouse) {
            Mouse mouse = (Mouse)usb;
            mouse.click();
        }else {
            KeyBoard keyBoard = (KeyBoard) usb;
            keyBoard.input();
        }
        usb.closeDevice();
    }
}
